Anna's Hummingbird vs Short-tailed Woodstar
Calypte anna 对比 Myrmia micrura
Side-by-Side Comparison
| 属性 | Anna's Hummingbird | Short-tailed Woodstar |
|---|---|---|
| 学名 | Calypte anna | Myrmia micrura |
| 目 | Caprimulgiformes | Caprimulgiformes |
| 科 | Trochilidae | Trochilidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | 10.0 cm (3.9 in) | — |
| 翼展 | 12.0 cm (4.7 in) | 6.8 cm (2.7 in) |
| 体重 | 4.3 g (0.15 oz) | 2.1999999999999997 g (0.08 oz) |
| 食性 | Nectar, small insects, and tree sap. Visits a wide variety of native and ornamental flowering … | Nectarivore of Peruvian coastal scrub and lomas vegetation; visits small flowers. Catches tiny insects in … |
| 产卵数 | 2 | 2 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Anna's Hummingbird
Chaparral, coastal sage scrub, gardens, parks, and open woodland along the Pacific coast. One of few hummingbirds not fully migratory.
Song & Call Comparison
Anna's Hummingbird
Male produces a complex, scratchy song with buzzy 'dzzzzt' notes. Gives a nasal 'chee-chee-chee'. Males sing year-round, even in winter; one of few hummingbirds with true song.
Short-tailed Woodstar
Rapid, light chips in cheerful animated sequence; bright staccato notes with buoyant quality near flowers.
Geographic Range & Migration
Anna's Hummingbird
Western North America from southern British Columbia along the Pacific coast to Baja California. Range has expanded northward.
Short-tailed Woodstar
Found in arid scrub and coastal desert of Peru and far northern Chile. Sea level to 2,000 m elevation.
保护状况
Anna's Hummingbird
Short-tailed Woodstar
How to Tell Them Apart
Anna's Hummingbird
Metallic bronze-green upperparts. Males have an iridescent rose-red crown and gorget. Females have green upperparts with grey underparts and a small red gorget patch.
Medium-length, straight, thin black bill
Short-tailed Woodstar
Santa Marta Sabrewing: males with glittering ruby-red gorget; metallic green above; white postocular stripe; females green; spotted
About These Birds
Anna's Hummingbird
Anna's hummingbird is the most common hummingbird along the Pacific coast and one of only three species resident in the United States year-round. Males perform spectacular dive displays, plummeting from 40 meters and pulling up with a loud chirp produced by tail feathers. Their body temperature can drop to near ambient at night to conserve energy.
Short-tailed Woodstar
A tiny hummingbird (6-7 cm), one of the smallest birds in the world. Found in arid coastal Peru and Ecuador. Short tail, short bill, and tiny body. Nectarivore of desert scrub and dry woodland flowers. Weighs only 2-3 grams.